The ABB SMB/S1.1 KNX Fault Monitoring Unit (product ID GHQ6310085R0111) is an MDRC logic device that detects, processes and manages up to 100 fault messages on a KNX twisted-pair installation. Messages are handled centrally and can be forwarded to display units, with optical and acoustic collective signalling in line with DIN 19 235.

Install on a 35 mm DIN rail, commission with ETS, and use it wherever plant status, alarms and loss-of-data reporting must be visible to operators without dedicating a full visualization server.

Key Features

• Up to 100 fault messages: Central evaluation and forwarding on KNX TP.
• DIN 19 235 messaging: Structured fault handling for building automation.
• Collective signalling: Optical and acoustic status indication.
• MDRC / IP20: Compact rail-mounted housing for distribution boards.
• Low power loss: Approx. 0.3 W; no internal batteries.

At a Glance

Specification	Detail
Product type	KNX Fault Monitoring Unit, MDRC
Order code	SMB/S1.1
Product ID	GHQ6310085R0111
Bus system	KNX twisted pair (TP)
Fault capacity	Up to 100 messages
Mounting	DIN rail (MDRC)
Degree of protection	IP20

Pair with visualization such as the ABB CT/S2.1 APP-Control Server when operators need a full UI alongside structured fault monitoring.